Help with logic to monitor A/B Test

[jeromeinnocenticx]

I was wondering if this logic could work. When I launch an A/B test, I want to ensure that the client hasn’t made any HTML changes that could break an existing test. Each test injects a specific class into the body, so I was thinking—could I use that class to check if a test is running, and then monitor for any visual changes that might indicate something is broken? If so, I’d like to trigger and send an alert when such changes are detected. Any suggestion how I could achieve this?

[dgtlmoon]

What about as a filter... (one liner)

xpath:string-join(for $c in distinct-values(//@class/tokenize(., '\s+')) return concat($c, ': ', count(//*[@class/tokenize(., '\s+') = $c])), '
')

Explanation:

• //@Class finds all class attributes in the document.
• tokenize(., '\s+') splits class attribute strings into individual class names based on whitespace.
• distinct-values() retrieves unique class names.
• The loop then iterates over these unique class names, returning each class name and its occurrence count in the document.

[jeromeinnocenticx]

Sorry it was an issue with my message "body" was missing in the text Each test injects a specific class into the body so can we watch a page only if class exist on the body then to watch any element visual changes related to the A/B test